注册键盘显示/隐藏的通知中心对我的应用程序有效，更新到 iOS 11 或更高版本后，键盘通知中心无法正常工作？
func registerNotificationObservers()
{
NotificationCenter.default.addObserver(self, selector: #selector(ArticleDetailsVC.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(ArticleDetailsVC.keyboardWillHide), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
func removeNotificationObservers()
{
NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.removeObserver(self, name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}
func keyboardWillShow(notification: NSNotification)
{
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue
{
if self.commentsTableView.frame.origin.y == 0{
print("keyboardWillShow ..")
self.tableViewFooter.frame.origin.y -= keyboardSize.height - 50
self.commentsTableView.frame.origin.y -= keyboardSize.height
}
}
}
func keyboardWillHide(notification: NSNotification)
{
if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue
{
if self.commentsTableView.frame.origin.y != 0{
print("keyboardWillHide ..")
self.tableViewFooter.frame.origin.y += keyboardSize.height + 50
self.commentsTableView.frame.origin.y += keyboardSize.height
}
}
}
我需要做什么？ 提前致谢。
最佳答案
为您的观察者尝试这个更新的语法:
func registerNotificationObservers() {
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: .UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector:#selector(keyboardWillHide), name: .UIKeyboardWillHide, object: nil)
}
func removeNotificationObservers() {
NotificationCenter.default.removeObserver(self, name: .UIKeyboardWillShow, object: nil)
NotificationCenter.default.removeObserver(self, name: .UIKeyboardWillHide, object: nil)
}
@objc func keyboardWillShow(_ notification: Notification) {
print("keyboardWillShow")
}
@objc func keyboardWillHide(_ notification: Notification) {
print("keyboardWillHide")
}
关于ios - 键盘显示/隐藏的通知中心在 iOS 11 中不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46736677/